EarthTextureStreamingResources
All the LOD levels of images for sphere earth (6 Faces from NASA) and plane earth (8 faces from NASA), Blue Marble
The Texture taken from following site
https://visibleearth.nasa.gov/view_cat.php?categoryID=1484
For 8 Faces Earth A1,B1,C1,D1,A2,B2,C2,D2 NOTE: Above taken from link
For 6 Faces Earth (created from a single texture by me) front (C2), back (C1), left (A1), right (A2), top (B2), bottom (B1) NOTE: A1,A2,B1,B2,C1,C2 are not from site, but created by me.